Gas-burner.



-N0. 840,881. PATENTED JAN. s, 1907.

J. DOORBNBOS.

GAS BURNER.

APPLICATION FILED APR.20,1906.

UNITED STATES PATENT OFFICE.

JOHN DOORENBOS, OF KALAMAZOO, MICHIGAN, ASSIGNOR TO NATIONAL GAS LIGHT CO., OF KALAMAZOO, MICHIGAN, A CORPORATION OF MICHIGAN.

GAS-BURNER.

Specification of Letters Patent.

Patented Jan. 8, 1907.

To all whom it may concern:

Be it known that I, JOHN Doonnnnos, a citizen of the United States, residing at Kalamazoo, in the county of Kalamazoo and State of Michigan,-have invented a new and useful Improvement in Gas-Burners, of which the following is a specification.

Myinventionrelatesparticularlyto regulating means for gas-burners; and my primary object is to provide improved means for regulating the passage of gas through a Bunsen burner, the device being adapted to control the feed of gas through the burner regardless of the variation of pressure of gas in the mains.

My invention is illustrated in its preferred embodiment in the accompanying drawings, in which Figure 1 represents a Bunsen burner constructed in accordance with my invention, and Fig. 2 an enlarged broken vertical section through the base of the burner and showing the pressure-regulating means.

' In the construction shown, A represents my improved burner, and B a chimney support of well-known construction. The burner comprises a nipple a, adapted to be secured upon a chandelier-arm or a bracket arm, said nipple being surmounted by a removable hollow cap a, a cylinder a carried by the upper end of the nipple a and confined within the cap a, a self-adjusting needlevalve a carried by a disk a movable within the cylinder a and a Bunsen-burner tube or mixer-tube a having air-inlets a above the cap a. As shown, the nipple a, is internally threaded at its lower end at a and has formed in it a chamber a from which a passage a extends upwardly to admit gas beneath the disk at, and a passage a extends laterally, communicating with a vertical passage a, which in turn communicates with -a chamber a, formed between the cylinder a and the interior surface of the cap a. The nipple a preferably has at its top a boss 0. through which the passage a extends, and the cylinder a is open at its upper end and has an inturned flange a, at its lower end, which fits upon the boss a and is secured thereon by a bur a. The needle-valve extends, when the disk a is at the lower end of its traverse, into a gas-orifice (1. with which the cap a is provided at its apex, a passage being afforded for gas, however, in this position. The lateral passage a is guarded by a valve a", which has a threaded shank at extending through the opposite wall of the nipple. The

valve and its shank may be formed by a screw having a knurled head to enable ad justment to be made and having a reduced extremity forming the valve. The cap a is formed with a reduced-upper portion a, which is externally threaded to receive the internally-threaded lower end of the burnertube a The formation is such as to provide a shoulder a upon which the chimney-support B rests outside of the base of the burnertube. The bur may be formed by striking the portion of the boss e which extends above the flange a of the cylinder a with a cold-chisel, so that passages will be provided enabling the gas to pass freely to all parts of the lower surface of the disk a.

From the foregoing detailed description the operation of the valve will be readily understood. In the normal operation the gas is admitted through the lateral passage a, the vertical passage a and the annular chamber a to the orifice 0. and thepressure is also admitted to the cylinder (1 beneath the disk M. The pressure causes the needle-valve to rise and obstruct the orifice a until the back pressure due to the constricted opening, taken in connection with the weight of the valve, is sufficient to balance the lifting force up on the valve. It will be obvious, therefore, that the device may be adjusted to varying pressures by regulating the position of the valve a, whose stem projects laterally from the nipple a, to enable this purpose to be accomplished.

It is obvious that the device may be advantageously employed in connection with Bunsen burners of all forms and types, and the device is especially valuable in connection with incandescent gas-lamps of all kinds.

The foregoing detailed description has been given for clearness of understanding only, and no undue limitation is to be understood therefrom.

What I regard as new, and desire to secure by Letters Patent, is

1. The combination with a Welsbach burner having a gas-orifice and a mixer-tube into which said orifice opens, a valve controlling said orifice and equipped with a piston, a cylinder in which said piston moves, a passage leading to the cylinder beneath the piston, a passage extending around the cylinder to said first-named orifice, and a valve con trolling said last-named passage.

2. The combination of a nipple having a chamber therein and a vertical passage from said chamber and a lateral passage from said chamber, a laterallyextending threaded valve connected with said nipple and controlling said lateral passage, a cap surmounting the nipple and having an oriiice, a cylinder within the cap surmounting the nipple, and a piston within the cylinder equipped with a valve controlling said orifice.

3. The combination of a nipple having a chamber with a central vertical passage therefrom and a lateral passage, a cylinder connected with the upper portion of said nipple into which said vertical passage opens, a piston Within said cylinder, a cap surmounting said nipple and inclosing said cylinder, said cap having a central orifice at its apex, and a needle-valve extending into said oriice and equipped with a piston working in said cylinder, for the purpose set forth.

4. The combination of a nipple having a chamber with two passages leading therefrom, a cylinder in communication with one passage, a piston working in said cylinder and equipped with an upward-extending valve, a cap surmounting said nipple and forming with the cylinder an annular passage for gas, the said cap having a reduced externally-threaded upper portion, and a mixer tube screwed on said cap.

JOHN DOORENBOS. 

